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| author | Rajashekhara, Mahesh <Mahesh_Rajashekhara@adaptec.com> | 2010-05-10 04:17:57 -0700 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2010-05-16 22:40:40 -0400 |
| commit | 1fc8010a5d9a27391db2be103b13f4ac80990cfc (patch) | |
| tree | 6943d7f3dbd2bf8435623b5f86e7a53163d4fadb /drivers/scsi | |
| parent | e3cc268fe4a0ad1cbefbc53cee35c80281e609b8 (diff) | |
| download | linux-1fc8010a5d9a27391db2be103b13f4ac80990cfc.tar.gz linux-1fc8010a5d9a27391db2be103b13f4ac80990cfc.tar.bz2 linux-1fc8010a5d9a27391db2be103b13f4ac80990cfc.zip | |
[SCSI] aacraid: add support for handling ATA pass-through commands.
There are two conditions for ATA pass thru command that falls into
'SRB_STATUS_ERROR' condition.
1. When the "CC" bit is set by the host in ATA pass-through CDB
- Even for the successful completion, SCSI target shall generate
check condition.
- Driver returns a result code of SAM_STAT_CHECK_CONDITION, with a
driver byte of DID_OK to the mid layer.
Below is the snippet of existing code which fills a result code
of SAM_STAT_CHECK_CONDITION:
***********************************
if (le32_to_cpu(srbreply->scsi_status) == SAM_STAT_CHECK_CONDITION) {
int len;
scsicmd->result |= SAM_STAT_CHECK_CONDITION;
..........
************************************
2. When the "CC" bit is reset by the host and if SCSI target generates
a check condition when an error occurs.
- Driver returns a result code of SAM_STAT_CHECK_CONDITION, with a
driver byte of DID_ERROR to the mid layer.
Signed-off-by: Mahesh Rajashekhara <aacraid@adaptec.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/aacraid/aachba.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c index 24b1ba06ece4..fdc7d9935aeb 100644 --- a/drivers/scsi/aacraid/aachba.c +++ b/drivers/scsi/aacraid/aachba.c @@ -2693,8 +2693,22 @@ static void aac_srb_callback(void *context, struct fib * fibptr) scsicmd->cmnd[0], le32_to_cpu(srbreply->scsi_status)); #endif - scsicmd->result = DID_ERROR << 16 | COMMAND_COMPLETE << 8; - break; + if ((scsicmd->cmnd[0] == ATA_12) + || (scsicmd->cmnd[0] == ATA_16)) { + if (scsicmd->cmnd[2] & (0x01 << 5)) { + scsicmd->result = DID_OK << 16 + | COMMAND_COMPLETE << 8; + break; + } else { + scsicmd->result = DID_ERROR << 16 + | COMMAND_COMPLETE << 8; + break; + } + } else { + scsicmd->result = DID_ERROR << 16 + | COMMAND_COMPLETE << 8; + break; + } } if (le32_to_cpu(srbreply->scsi_status) == SAM_STAT_CHECK_CONDITION) { int len; |